Amzi p



III

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W f-tnesaes Inventor'.

N.PETF.RS. PHOTO-L THDGRAFHER. wAsHtNGTONy D Cv l fry: '7.

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n o 9 a2 @7 @m 1D @wf Q@ :;V E f VVfnesSes, I n f 'Mentor @wfg Q WQ, WM )fag/Ma gy/M l NAPETEHS. PHOT0-L|THOGRAFNER, WASHINGTON. D C

` @uiten gieten atr-rtt ffice.'

Letters Par-tent No. 79,255, dated Jima 23, 1868.

IMPROVED MAGHI'E FOR EORGING NUTS.

dile Sunbelt retrait lo in llrst Etains ,l/latent rnb making uit tf tlgc snuit.

TO ALL WHOM IT MAY CON CERN:

'Be it known that we, Anzi l. PLANT and Aires Snnraun, of Plantsville, in the county of Hartford, State of Connecticut, have invented-a new and improved Machine for Forging Nut-s; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use same, reference being had to the accompanying drawings, making a part of thisvspccitication, in which- Figure 1 is a front viewof our invention. i

Figure 2 is a horizontal section of the same, taken in the line w 1u, fig. l,

Figure 3 is an end view of the same.

Figure 4 is a. transverse vertical section of the saine, taken in the line .r e', fig. 1.

Figure 5 is a. transverse vertical section of a portion of the same, taken `in the line y y,- iig. l.

Figure 6 is a portion ot' the saure, as viewed from underneath, with a small part broken away, to'show the arrangement of parts.- A l `Fig-nrc 7 is a transverse vert-ical section of a portion of the same, taken in the line e s, iig. 1.

Figure 8 is a. horizontal section of a portion of the same, similar to tig. 2, showing a position of the conn veyers while exchanging the nuts. i

Similar letters of reference indicate corresponding parts in the several figures.

Our invention consists in a novel and improved manner of feeding or conveyingr the uutblank from the cut off mechanism to the dies, for bazzeling its corners, punching its hole, and swaging its edges, whereby we are.

enabled to make the mechanism for feeding cr conveying the nuts much lighter and less cumbersome than hitherto; and, also, to make a double machine, with one cut-off', (the blanks, as they are cut of, being conveyed, one to the right, and one to the left, in alternate succession,) oi' great simplicity, and with but little multiplication of parts; and, also, in the peculiar construction of the dies, their construction being such as to form the angles of the nut more acute and perfect than by the dies most commonly used.

To enable -those skilled in the art to fully understand and construct our invention, we will proceed to describe it.

A represents a horizontal bed, supported by the supports V V. B is a stand, attached to the bed A, conrposed of two uprights and a horizontal cross-bar, extending from one to the other, and connecting them. This cross-har has vertical slides, C33 C22 C C Cl C2 C3, fitting in grooves in the front of it. Above and parallel with the cross-bar, and tting in journals in the upper part ot' the uprights of the stand B, is the driving-shaft E, having the cams D33 D22 D1l D Dl D2 D3 rigidly secured to it. 'lhese cams are placed in such positions as t0 coincide with the aforementioned slides. y

The cam Dl and sliding har C1, with the wedge tl attached to it, the die c', for bazzeling the corners of thc nut, and the horizontal sliding diejI and stationary die g, for swuging the edges ofthe nut, as shown plainly in fig. 7, constitute the mechanism which first forges the blank after it has been out from the bar. The cam D, sliding bar C, wedge It, dies c.f/ g, are the exact counterparts or duplicates ofthe above-mentioned mechanism. 'lhc punching and the inishingunechanism, hereinafter described, are also duplicated, as plainly seen by reference to the drawings.

The cam 22 and the sliding har C, with the wedge h2 attached to it, the punch m for punching the hole in the nut, and the horizontal sliding die 7c and stationary diej", with the hole through which the puuchings are pushed in it, as shown in iig. 4, constitute thc mechanism for punching the hole in the nut. The cam D33 and sliding bar Ci, with its wedge similar to the ones upon the sliding bars C2: C, the die o, for flattening the top of the nut after it has been punched, the horizontal sliding die t', and stationary die 12., for swaging the edges of the nut, constitute the mechanism for finishing the nut. The cam D and sliding bar C, with the cuttingeil dies c and LZ, form the cut-oit" mechanism. This, in a double machine, with its right and left-hand parts symmetrically arranged, as in our invention, should 'ne placed midway between the right and lcfthand ends of the machine. 'lhe cam D has two projections, as shown by the dotted lines, iig. 1l. 'lhcse projections, as the shaft E (on which the cam l) is secured) is caused to revolve, act upon the sliding bar C, causing it to descend twice during one revolution of the cam D. 'lhe sliding bar C is moved upward or retracted by the reaction of a spring similar to the spring p, lig. d. The cams DE D:2 DU'D iD2 D3 of the mechanism, for bazzcling the corners, punching the hole, and finishing the nut, have but one projection, as shown in the drawings. These cams, as they revolve, act upon their coinciding sliding bars Ci's CZ2 C C1 C2 C3, causing them to descend, and the sliding bars C33, the., are retracted bylsprings. 'lhe jwedges upon the slides 033,022 C Cl C2 C3,y as they descend, act upon inclined planes on the sliding dies z' 'rf/'j"l"k c7, shown in part in figs. 4 and 7, causing the horizontal sliding dies to move towards the stationary dies, 1tj {Wg/j n', opposite. l The slidingdies "if cf/f 7: t" are retracted by springs, one of which is shownin lig. 4l. Underneath and parallel with'tlie front edge of the bed A, and fitting in journals in the supports V Y, is a horizontal shaft, F, having the cams G1 Gr2 G3 secured to it` In front of the bed A, and parallel with the shaft'F, are two slides, H1 H2, placed in the guides I. rlheso guides are secured to the bed-A. Underneath the bed A there is also a slide, il, shown in figs. 1, 5, and G. I

The slides H1, U2, and J, have pendants, i 'A7V-'1113, secured to them; and these 'slides are actuated by the grooved vcams Gf* Gc G3 as they revolve, striking against these pendants. On the upper surface of the bed A are thc conveyors um ngz n u1 il? n3; and underneath the bed A is another conveyor, u. These conveyors swing horizontally, to the right and left, upon fulcrum-pins, and are actuated by pins or cogs (gearing in slots made in arms of the conveyers') upon the slides H1, H2, and J, as these slides are moved by the cams G Gr2 G3. The conveyer u has a projection, which extends ,upward through a hole in the bed A, and underneath thecut-o' mechanism.

The shafts E Fare made to revolvewith equal velocities, by mcansi'of any proper gearing connecting them, and the rst motor may be applied either to the shaft E or F. v v

A nut is forged by our invention in the following manner: 'lhc heated bar is fed underneath the cut-off the c, the machine having been previously set in motion. |The die descends by the action oi the camD, and sevcrs a blank from the bar. At this moment thc cam G moves the slide J, by acting against the pendant r2 of this slide, and a pin or cog upon this slide, gearing into a slot made in one arm of the conveyor u, swings. the opposite -arm of conveyor tt either` to the left, to the position shown in iig. S, or right, accordingto theposition ofthecamG. A Y. I

The conveyor lu is placed underneath the cut-off; and the arrangement is such .that ablank, when eu t=from the bar, is deposited upon either the right or left-hand end of it. The conveyor u ,carries the blank from the cut-o, in a curved direction, nearly one-eighth of a circle, and midway between thc `cnt-olfand first-forging mechanism, and placing it, relatively to the dies, in a diagonal position, as shown in iig. 8, and in front of the end of thc curved arm of conveyor u or al. As soon as the blank has been placcdin this position, the cani G3 ners against thc pendant r ofthe slide Hl, imparting motion to this slide. The pin or cog which gears into the slot in the arm of conveyor u or u1 upon this slide swings the opposite arm of the conveyor, pushing the nut-blank before it to the dies ofthe first-forging mechanism. The die for bazzeling the corners of the nut now descends upon it, by the action of the cam D orDl. upon the slide C or C, and, during the-descent of this slide, the wedge attached to it acts upon the inclined plane ofthe horizontal sliding dief orf', moving this die towards the stationary die g or y', swaging the nut-blank upon two of its edges. As'soon as these operations are performed, and the dies are retracted by the action of their-'respective springs, the slide is again moved inthe same manner as before, again swinging conveyor n oraal, pushing the nut-blank from thc dies, and conveying it midway between the punching-dies and dies of the first-'forging mce'hanisnnnnd in front of the end of the curved arm of convcycr n.22 or n2. The slide H2 is now moved by the cam G, acting against'the pendant rl of this slide, and the pin o1' cog on this slide, gearing into the conveyor ai: or u2, swings its curved arm, pushing the' nut under the punch of the punching-mechanism. The punch now descends, by the action of thel cam D22 or DZ, upon the slide C? or C2, and punches the hole in the nut. 'lhe position ot' thepunching-mechanism, at this stage of the operation, is clearly shown Aby lig. d. As soon as the punch is withdrawn from the nut, thc conveycr u or nl is again actuated by its respective mechanism, pushing the nut from the punching-dies, conveyingr it midway between the finishing and punching-mechanism, and in front of the end of the curved arm of conveyor u or n3, as shown clearly in iig. 8. lhe conveycr it or u? is new moved by the action of the cam Gr3 upon the pendant r3 of ,the slide IP, pushing the nut to the iinishingmechanism. This finishing-mechanism is similar in' its operation to thc iirst-forging mechanism. The iinishii'ig-operation is next performed, and, when completed, the conveyor um or ufl is again movedpushing the finished nut from the iinishing-dies, when it drops out through a hole in the bed A, shown in figs. 1 and Q.

The cut-off first deposits a nut-blank on the left-hand end of conveyor u, (when it is in position shown in fig. 1,) and the conveyor then carries the nut-blanl to the left, to the position shown in tig. 8. The cnt-oil` then deposits a nut on the right-hand end of conveyor u, which, :1s-the conveyor it is moved back to its former position, carries a nut-blank to the right. Thus, it 4will be seen that the conveyor u always carries a nut-b|ank, whether moving to the right or lel't. We would also state, that the action of' the conveyers may he fully understood, that the conveyors u etlunovc backward, to receive a nut-blank, at the same time that the conveyors uhu move forward, conveying the nut-blank; and that the conveyor' "id-'i moves backward at the saine time that the conveyor u2 moves forward, and rz'c'c eersel. We would here remark that thepnnching-inechanisin on the right, the cut-oil` in the central, and the first-forging and iinishirig-mechanism on the left part ot' the machine, operate simultaneously; and that the punching-inechanism on the left, the out-oli' in the central, and the firstforging and tinishi11g-mechanism on the right, operate simultaneously, so that there are four nut-blanks operated upon at onetime;

The dies (for forging the edges of the nut) oi' our invention constitute an important feature. The swagingdies of nut-machines,ias heretofore constructed, are composed of three separate pieces, at least, lthe edges of the nut being swaged by two or'four surfaces, which are perpendicular to the surface upon which the nut rests. The surface upon which the nut rests is on a piece either wholly` disconnected from tbe perpendicular surfaces, or secured or connected with but one. Swaging-dies constructed in this manner have their edgessoon worn by the scales and rough edges of theV nut, protruding underneath and between the' sui-face on which tbc nut rests and the adjoining edges ofthe perpendicular surfaces, and, consequently, fail to swage the edges of the mit asl acute and perfect as desired. The dies have one-'half of the surface upon which the nut rests,and the perpendicular surface, for swaging one edgeof the nut, solid, in one piece, as shownby the illustration'of thc dies f g', fig. 't'. v t It will be readily seen by the skilled mechanic that a machine having but one set of mechanism for swaging, punching, and finishing, can be constructed with conveyers to operate in the same, or nearly the same, manner as the rght'and left-hand conveyers described in these specifications', and'wewould not limit ourselves to the manner and arrangement ofthe right and left co'nveyers, as arranged in a right and left-hand machine" alone, but we consider it asof our invention when applied to a machine having but one set of swaging, punching, and finishing-mechanism. v ,l v

We are aware that nut-forging machines have lbeenl constructed having mechanism for conveying the nuts from one part to another, and we do not claim those devices irrespective of their arrangement and vmodeoi` operation.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is- 1. The right and left-hand 'conveyor u, when so constructed as to convey a nut-blank from the cut-cifmcchanism, whether moving from the right orleft, and slotted plate A, in combination with the cut-oil` device, and a forging-mechanismen the right and left of it,substantially as described. i

2. The swingingconveyers ul u2 us., in combination with the forging, punching, and finishing-mechanism, all

constructed, arranged, and operating substantially as described. f A

y AMZI P. PLANT,

AMOS SHEPARD. Witnesses: I

E. H. PLANT,

E. P. Ho'rcHKIss. 

